Calculating machine



July 5, 1932. c. M. F. FRIDEN CALCULATING MACHINE Filed May 5, 1928INVENTOR Car/ M E FP/b'en BY;

A TTORNE YS Patented July 5, 1932 UNITED STATES PATENT OFFICE CARL M. F.FREEN, OF OAKLAND, CALIFORNIA, ASSIGNOR 'IO MARCHAN'I CALCULAT- INGMACHINE COMPANY, OF EMERYVILLE, CALIFORNIA, A CORPORATION 01? CALIFORNIACALCULATING MACHINE Application filed May 5, 1928. Serial No. 275,309.

The invention relates to calculating ma chines in which the numeralwheels of the product register are mounted on a carriage which, for thepurpose of making direct action of the selected values on the numeralwheels of highest value possible, is disposed in parallel displaceablerelation to the axis of the actuator. The carriage is usuallydisplaceable transversely in a step by step movement and is positivelyheld in any selected, set position. One means for moving the carriageand holding it in selected position is disclosed in my copendingapplication, Serial Number 539,422, filed February 27 1922, to whichreference is hereby made for a complete disclosure of the carriagemoving means. This disclosure shows means for positively holding thecarriage against movement in either direction. Means have been providedfor disabling the holding means to permit free movement of the carriageby hand. The means for operating the disabling means has heretofore beenarranged on the frame of the machine, on which the carriage is mounted,so that the operator was required to use two hands, one to disable theholding means and the other to move the carriage.

An object of the present invention is to incorporate the disabling meansand the operating means therefor, in the carriage, so that the operatormay, with one operation of one hand, operate the disabling means andmove the carriage.

The invention possesses other advantageous features, some of which withthe foregoing will be set forth at len h in the following description,where I s all outline in full that form of my invention which I haveselected for illustration in the drawing at:-.

companying and forming part of the present specification. In saiddrawing, I have shown one form of the mechanism embodying my invention,but it is to be understood that I do not limit myself to such form,since the invention, as set forth in the claims, may be embodied in aplurality of forms.

Referring to said drawing;

- Figure 1 is a vertical section taken through a calculating machine infront of the transversely movable carriage, the casing of the carriagebeing partly broken away to disclose the numeral wheels of the productregister.

Figure 2 is a horizontal section through the base of the carriage takenon the line 2-2 Figure 1.

Figure 3 is a vertical section through the, carriage and the carriageshifting mechanism, taken on the line 33 Figure 1.

Figure 4 is a vertical section through the carriage shifting mechanismtaken on the line 44 Figure The numeralwheels 4 of the product registerare mounted in a carria e 5 which is displaceable transversely, or'narily in a step by step movement, on the frame of the calculatingmachine. The frame is provided with a transverse guideway 6 on which thebase plate 7 of the carriage slides. The base plate is provided with aseries of recesses 8,

aving the same spacing as the numeral wheels 4 and these recesses areengaged by suitable means for *ving the carriage a step by step movement1n either direction, as set forth in my prior application, abovereferred to. Means are also provided comprising the spring pressed dogs12 and 13 which engage in the recesses to positively hold the carriagein any selected set position. The means for giving the carriage a stepby step movement,

also embodies means for withdrawing the dog which prevents movement inthe selected direction.

It is frequently desirable to shift the carriage freely in eitherdirection over a series of steps, instead of using the step by stepshifting mechanism and means are provided for disabling theholding dogs12 and 13, to

permit free movement of the carriage. In.

the present instance, these means are mounted on the carriage so thatthe o erator with one movement of his hand, disa les the holding meansand shifts the carriage.

Mounted on the base plate 7 of the carriage 1 isa rocking plate 14having on its rear edge, a plurality of downwardly extending teeth 15which lie in the plane of the holding dogs 12 and 13 and which extendpart way into the recesses 8. Means are provided for rocking the plate 11 to move the teeth 15 further into I senting a substantially smoothsurface on the holding the carria lower face of the base plate 7, incontact with the upper edges of the holding dogs, so that the carriagemay be freely moved in eitherdirection.

The plate 14 is rocked by the lever 16 which is disposed adjacent thefinger grip 17 on the carriage so that both the ger grip and the leverare caught between the thumb and forefinger of the operator when hedesires to freely shift the carriage. The pressure on the lever 16,rocks the lever to cause rocking of the toothed plate 14 which causesthe ejection of theholding dogs 12 and 13. Connected to the lower end ofthe lever 16 is a slide 18 which extends under a lip 22 on the forwardedge of the rocking plate 14. The slide 18 is provided, adjacent t e lip22, with a raised portion 19, which, when the slide is moved by manualpressure on the lever 16, slides under the lip 22 and rocks the plate 14to move the teeth 15 into the recesses on the base plateand therebydisplace the holding dogs 12 and 13. By arranging the operating meansfor the disabling means of the holding dogs, on the carriage andpositioning it ad] acent the finger grip 17, the operator may with oneoperation of one hand, operate the disabling means and shift the carriato any desired position. On the release 0 the lever 16, the plate 14rocks back to normal position and the dogs 12 and 13 engage in therecesses when the carriage is properly positioned, and hold the carriageagainst movement.

I claim:

1. In a calculating machine, a transversely movable carriage providedwith a series of recesses, means engaging the recesses for againsttransverse movement in either rection, a member carried by the carriageprovided with teeth registering with said r and means for movin saidmember to cause the teeth to eject the holding means from the recesses.

2. In acalculating machine, a transversely movable carriage providedwith a series 0 recesses, a plurality of means engaging the recesses for.holding the carriage against transverse movement in both directions, amember carried by the carriage for ejecting the holding means from therecesses, and means on the carriage for operating said ejecting member.a

3. In a calculating machine, a transversely movable carriage providedwith a series of recesses, means engaging the recesses for holding thecarriage against transverse movement in either direction, a rockin platemounted on the carriage, teeth on said plate extending into saidrecesses and means on the carriage for rockin the plate to move theedges of the teeth 1nto alinement with the surface in which the recessesare formed therebyejecting the holding means from the recesses andpermitting free transverse movement of the carriage.

4. In a calculating machine, a transversely movable carriage providedwith a series of recesses, means engaging the recesses for holding thecarriage against transverse movement, a rocking plate mounted on thecarriage, teeth on said plate extending into said recesses, and a leveron the carriage for rocking said plate to move the edges of the teethinto alinement with the surface in which the recesses are formed.

5. In a calculating machine, a transversely movable carriage providedwith a series of recesses, spring pressed means engaging the recesses tohold the carriage against transverse movement and a toothed platemounted on the carriage in the plane of the holding means and adapted tobe moved to move the teeth into the recesses to bring the edges of theteeth into the surface-in which the recesses are formed.

6. In a calculatin having a base proviia cesses, dogs engaging therecesses to hold the carriage against transverse movement in eitherdirection, a rocking plate mounted on the carriage, flat faced teeth onthe rocking plate registering with the recess, and means mcluding alever on the carriage for rocking said plate to move the faces of theteeth into the plane of the bottom of the face,

machine, a carriage thereby to form a substantially smooth bot-.

tom surface in which the dogs cannot engage. 7. In a calculatingmachine, a transversely movable carriage provided with a series ofrecesses means engaging the recesses for hold- Ing the carriage againsttransverse movement, a membercarried by the carriage provided with teethregistering with said recesses and means for moving said member to causethe teeth to eject the holding means from the recesses.

8. In a calculating machine, a transversely movable carriage providedwith a series of recesses, means engaging the receses for f holding thecarriage against transverse move ment, a member carried by the carriagefor ej ecting the holding means from the recesses and means on thecarriage for operating sai ejecting member.

9. In a calculating machine, a transversely movable carriage providedwith a series of recesses, means engaging the recesses for holding thecarriage against transverse movement, a rocking plate mounted on thecarriage, teeth on said plate extending into said recesses and means onthe carriage for rocking the plate to move the edges of the teeth intoalinement with the surface in which the recesses are formed therebyejecting the holding means d with a series of retil from the recessesand permitting free transmy hand.

CARL F. F RIDEN.

